Comparing Different Rinsing Methods Used During Cleaning-in-Place of Process Vessels to Minimize Water Use
MBAA TQ doi:10.1094/TQ-46-1-0212-01 |
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George Agius and Doug Funnell. JohnsonDiversey Inc.,
Oakville, ON, Canada.
Abstract
Process vessels such as fermentation or aging tanks are usually
equipped with stationary spray balls or rotating spray heads to dispense
both detergent solution and rinse water during cleaning-in-place (CIP)
procedures. Rinsing removes soil or traces of detergent and is performed
either by spraying water continuously or by a series of short water bursts
until the tank is free of any contamination. Rinsing during CIP can
consume large quantities of water. Water conservation and the cost of
water are important incentives for breweries to find ways to minimize its
use. Theoretical modeling of continuous versus burst rinsing through
stationary spray balls showed that burst rinsing can be considerably more
efficient in the use of water. The operation of typical rotary head
machines is also analyzed qualitatively to determine their effectiveness
during rinsing, especially when compared with stationary spray balls.
Keywords: burst rinsing, CIP, continuous rinsing, rinse, rotary
spray head, spray ball
S�ntesis
Los recipientes del proceso, tales como los tanques de fermentaci�n
y de maduraci�n, generalmente est�n equipados con rociadoras esf�ricas
estacionarias o cabezales rociadoras rotativas para rociar el equipo con
soluci�n detergente o agua de enjuague durante los procedimientos de CIP.
El enjuague remueve suciedades o trazas de detergente y se efect�a
rociando continuamente con agua o bien con una serie de r�fagas cortas de
agua hasta que quede el tanque libre de cualquier contaminaci�n. El paso
de enjuague puede consumir grandes cantidades de agua. Las cervecer�as
deber�an buscar maneras de reducir este gasto, con el incentivo de reducir
los costos y conservar agua. Modelos te�ricos han demostrado que el
enjuague por r�fagas es considerablemente m�s eficiente en cuanto al
consumo de agua. Aqu� tambi�n se analiza cualitativamente la operaci�n de
diferentes cabezales rotatorios t�picos para determinar su eficacia para
el enjuague en comparaci�n con aquella con esferas rociadoras
estacionarias.
Palabras claves: cabezal rociadora rotativa, CIP,
enjuague, enjuague continuo, enjuague por r�fagas, esfera rociadora
